'String' in the Bible

Now she had men lying in ambush in an inner room. And she said to him, “The Philistines are upon you, Samson!” And he broke the cords as a string of tow breaks when it touches fire. So [the secret of] his strength was not discovered.

For look, the wicked are bending the bow;They take aim with their arrow on the stringTo shoot [by stealth] in darkness at the upright in heart.

It is He [the preeminent One] who comes after me, the strap of whose sandal I am not worthy to untie [even as His slave].”